<div class="nav_wrapper">
    <a href="/">回主站</a>
    |
    <a href="/admin/ebookmapping"{% ifequal nav_selected 'ebook' %} class="nav_selected"{% endifequal %}>ebook</a>
    |
    <a href="/admin/counter"{% ifequal nav_selected 'counter' %} class="nav_selected"{% endifequal %}>counter</a>
</div>
